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  Shootem-Up Enemy Attack Waves..  (Read 4882 times)
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Offline steveyO
« Posted 2009-12-31 19:35:01 »

I am looking for some links/algorithms to program some enemy attack waves (80s style shootem up).. For example,  enemies coming down in zig-zag patterns,  or entering the screen on the left, doing a circular loop and leaving the screen on the right (1942, or Galaxians style)..

Suprisingly, considering the amount of shootemups out there,  I can't find a single thing on google.  Am considering using Bezier Curves, or Sine Waves unless anyone can provide me with a better tip/method..   Wink   (ps.  For 4K, so looking for a few simple algorithms only).
Thnx  Edit:  Happy New Year Everyone!!  2D Game Editor + Random Graphics Generator
Offline moogie

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« Reply #1 - Posted 2010-01-01 00:06:26 »

random walk is very cheap (algorithmically) to implemented. You could also use the same mechanism to loop in circles while moving down by using a bias instead of randomness.

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Offline pjt33

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« Reply #2 - Posted 2010-01-01 18:16:12 »

If you do go for sine waves then remind yourself about (or read up on) simple harmonic motion. No calls to Math.sin required...
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Offline steveyO
« Reply #3 - Posted 2010-01-04 01:11:23 »

Gosh, its 20+ years since I did SHM   A-Level physics. Had a quick revisit but enough to put me off..
Have finally, gone for a combination of Bezier Curves and Random walking.. And gradually realizing why have never written a shootem up before.. Getting decent gameplay/waves is proving to be a real git and a half!  2D Game Editor + Random Graphics Generator
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